/**
 * @ Author     ：侯耀祖
 * @ Description：
 */
public class sort {
    public static class Test {
        public static void main(String[] args) {
            StringBuilder sb = new StringBuilder("Hello");
            changeStringBuilder(sb);
            System.out.println(sb); // 输出: Hello, World!
        }

        public static void changeStringBuilder(StringBuilder sb) {
            sb.append(", World!");
        }
    }

}
